O2 sensor in bad location on my 2006

[avguy]

First a disclaimer that I haven't had to replace it on either of my Aveos. That said, I don't think it would be a problem getting around that stuff. But you don't use a wrench for this job. Autozone (and maybe others) has a loan-a-tool program (buy then return for full refund), and you can loan an O2 sensor SOCKET (set) using this program. Thread the wire through the side of the socket, put an extension and a ratchet (or breaker bar if necessary) on it, and it should turn right out.